/*
 * This file is part of the eccOS Library.
 * Copyright (C) 2007.
 *
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 */
package org.openeccos.demo.dao;

import static org.hibernate.criterion.Restrictions.eq;
import static org.hibernate.criterion.Restrictions.like;

import org.hibernate.Criteria;
import org.hibernate.criterion.Order;
import org.hibernate.criterion.ProjectionList;
import org.openeccos.dao.AbstractPageableDataSource;
import org.openeccos.dao.HeaderValue;
import org.openeccos.demo.model.MWord;
import org.openeccos.util.ServerUtil;

/**
 * The data provider for FrmDemo
 * 
 * @author cgspinner@web.de
 */
public class FrmDemoDataProvider extends AbstractPageableDataSource {

	public static final String NAME = "FrmDemoDataProvider";

	@Override
	public String getName() {
		return NAME;
	}

	/**
	 * The base class for the criteria 
	 */
	public Class getModelClass() {
		return MWord.class;
	}
	
	@Override
	protected ProjectionList getProjection() {
		//we return "null", which means that MWord instances are returned by the criteria;
		//generally we prefer to query primitive values only (namely id and title) to make
		//it as lightweight as possible, but due to the composite key of MWord this is not feasable
		return null;  
	}
	
	/**
	 * This method creates the HeaderValue, which serves as entries in the table model
	 */
	@Override
	protected HeaderValue getHeaderValue(Object... data) {
		HeaderValue headerValues = new HeaderValue();
		headerValues.identifier = ((MWord)data[0]).getPrimaryKey();
		headerValues.title = ((MWord)data[0]).getWord();
		return headerValues;
	}

	/**
	 * applies the filter parameters to the criteria
	 */
	@Override
	protected void setParameter(Criteria criteria, Object[] params) {
		if (!ServerUtil.isEmpty(params[0])) criteria.add(like("word", params[0] + "%"));
		if (!ServerUtil.isEmpty(params[1])) criteria.add(like("word", params[1] + "%"));
		int sense = (Integer)params[2];
		if (sense > 0) {
			criteria.add(eq("senseNumber", sense));
		}
		criteria.addOrder(Order.asc("word"));
	}
}
